Merge pull request #296 from json-api-dotnet/test/creating-has-one

test(spec): can create hasOne relationship with resource

Author: jaredcnance

test/JsonApiDotNetCoreExampleTests/Acceptance/Spec/CreatingDataTests.cs

@@ -106,7 +106,7 @@ public async Task Cannot_Create_Entity_With_Client_Generate_Id()
                     attributes = new
                     {
                         description = todoItem.Description,
-                        ordinal = todoItem.Ordinal, 
+                        ordinal = todoItem.Ordinal,
                         createdDate = DateTime.Now
                     }
                 }
@@ -174,7 +174,7 @@ public async Task Can_Create_Guid_Identifiable_Entity_With_Client_Defined_Id_If_
             var httpMethod = new HttpMethod("POST");
             var server = new TestServer(builder);
             var client = server.CreateClient();
-            
+
             var context = _fixture.GetService<AppDbContext>();
 
             var owner = new JsonApiDotNetCoreExample.Models.Person();
@@ -285,6 +285,63 @@ public async Task Can_Create_And_Set_HasMany_Relationships()
             Assert.NotEmpty(contextCollection.TodoItems);
         }
 
+        [Fact]
+        public async Task Can_Create_And_Set_HasOne_Relationships()
+        {
+            // arrange
+            var builder = new WebHostBuilder()
+                .UseStartup<Startup>();
+            var httpMethod = new HttpMethod("POST");
+            var server = new TestServer(builder);
+            var client = server.CreateClient();
+
+            var context = _fixture.GetService<AppDbContext>();
+
+            var todoItem = new TodoItem();
+            var owner = new JsonApiDotNetCoreExample.Models.Person();
+            context.People.Add(owner);
+            await context.SaveChangesAsync();
+
+            var route = "/api/v1/todo-items";
+            var request = new HttpRequestMessage(httpMethod, route);
+            var content = new
+            {
+                data = new
+                {
+                    type = "todo-items",
+                    relationships = new Dictionary<string, dynamic>
+                    {
+                        {  "owner",  new {
+                            data = new
+                            {
+                                type = "people",
+                                id = owner.Id.ToString()
+                            }
+                        } }
+                    }
+                }
+            };
+
+            request.Content = new StringContent(JsonConvert.SerializeObject(content));
+            request.Content.Headers.ContentType = new MediaTypeHeaderValue("application/vnd.api+json");
+
+            // act
+            var response = await client.SendAsync(request);
+            var body = await response.Content.ReadAsStringAsync();
+
+            // assert
+            Assert.Equal(HttpStatusCode.Created, response.StatusCode);
+            var deserializedBody = (TodoItem)_fixture.GetService<IJsonApiDeSerializer>().Deserialize(body);
+            var newId = deserializedBody.Id;
+
+            context = _fixture.GetService<AppDbContext>();
+            var todoItemResult = context.TodoItems
+                .Include(c => c.Owner)
+                .SingleOrDefault(c => c.Id == newId);
+
+            Assert.Equal(owner.Id, todoItemResult.OwnerId);
+        }
+
         [Fact]
         public async Task ShouldReceiveLocationHeader_InResponse()
         {